Some average users also make use of "office" equipment / printers / Photo copiers at their place of work with built in hard drives. This is also a point of failure for some people.
On printers-
https://www.reddit.com/r/Bitcoin/comments/2aodta/on_printer_memory_for_the_security_of_printed/PRINTERS WITH HARD-DRIVE:
Pretty much any home/personal printer will not have a hard drive, but most will have some kind of memory installed. Depending on the type of printer, as well as the model, will determine how much, if any, memory is installed.
Most memory that is in home/personal printers only hold the data for the current print job from anywhere from a few lines to a few pages, as the job is being printed.
Once the job is complete or the printer is turned off, any data that was in memory is erased & unrecoverable. Printers commonly use basic RAM memory, which is commonly referred to as volatile memory since it cannot store data once power is removed.
NOTES ON PRINTERS WITH HARD-DRIVES:
If the printer allows you to bypass its internal hard drive and print directly from RAM, select this setting for better security, and ensure that print jobs are not stored on the printer hard-drive.
If you do choose to store print jobs on the drive, ensure that it is encrypted with a strong encryption method, such as AES.
If the printer allows you to overwrite the data immediately after printing (or scanning or faxing, if it’s an all-in-one device), select that option.
Almost all new models include a wipe disk function for decommissioning the printer, and most include disk encryption, so if you take the disk out of the printer you won't be able to read the information stored on it.
NOTE: Even old printers (laser, dot matrix, inkjet, etc....) had some kind of memory that they used for some data storage for printing.
NOTES ON PRINTER MEMORY:
Most current printers have a couple megabytes of memory In some cases the printer may be using volatile memory with a battery backup, If it is, this should be mentioned in the user guide. In that case,
leave it unplugged for however long the user guide says is too long.MISC. NOTES FOR CREATING COLD STORAGE WALLETS:
ALWAYS ASSUME YOUR DEVICES HAVE BEEN COMPROMISED BY BAD ACTORS (Criminals) Use a dedicated computer & printer for purposes of creating Cold-storage wallets.
Keep both dedicated computer and printer off the internet, keep wireless options deactivated or physically removed if possible.
MOST POPULAR PRINTERS: Most Popular Printers with examples of on-board memory
Amazon top 13 Printers (Best Sellers)
# Brand Model Memory Capacity Notes
1 Canon PIXMA MX922 Approx. 250 Pages12 FAX
2 Epson XP-310 Wireless NL Not Listed
3 Brother HL-2270DW Compact Laser 32MB Standard
4 Epson XP-410 Small-inkjet NL Not Listed
5 Canon PIXMA PRO-100 Color 250 Pages
6 HP Envy 4500 Wireless NL Not Listed
7 Brother MFCJ450DW 170 Page Fax Memory
8 Epson WF-3520 Wireless NL Not Listed
9 Epson WF-2540 Wireless NL Not Listed
10 Epson WF-3620 Wireless Up to 180 pages Fax Memory
12 Canon LBP6000 2MB buffer memory
13 Hewlett Packard 1102W Wireless 8 MB Standard